ASTROSAT CZTI

Data Quality Report

Orbit 39808

Creation date: 2024-06-27T22:09:11.054397
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A12_022T01_9000005498_39808cztM0_level2.fits modeM0/AS1A12_022T01_9000005498_39808cztM0_level2_quad_clean.evt
Size (bytes)1,167,920,640224,760,960
Size1.1 GB 214.3 MB
Events in quadrant A7,853,7621,626,572
Events in quadrant B7,374,7741,643,072
Events in quadrant C19,628,9001,174,952
Events in quadrant D7,326,0151,423,146

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0313824
B0307313
C0677473
D0309013

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0570
B0570
C0570
D0570

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02780
B02780
C02780
D02780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A135741190.876676%
B135741801.326065%
C13574378727.898924%
D135741571.156623%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 19342 13577 78 78 0.40% 0.57%
B 19342 13577 121 121 0.63% 0.89%
C 19342 13577 3404 3404 17.60% 25.07%
D 19342 13577 135 135 0.70% 0.99%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 1014451 3234.41 1556 1527 313.2
A 9 143 399222 1269.89 1556 1527 313.2
A 13 248 217402 689.32 1556 1527 313.2
B 5 172 454056 1572.31 1522 1482 287.8
B 4 171 361095 1249.35 1522 1482 287.8
B 5 32 217677 751.1 1522 1482 287.8
C 9 187 10741774 35365.48 1327 1332 303.7
C 15 208 3139207 10332.2 1327 1332 303.7
C 15 214 507670 1667.24 1327 1332 303.7
D 12 227 486421 1329.94 1504 1461 364.6
D 2 249 419481 1146.37 1504 1461 364.6
D 13 249 354420 967.94 1504 1461 364.6

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter